Nepal 100 prevention & control 44 standards 41 Public Health 38 Environmental aspects 37 Environmental health 37 Health aspects 37 Pollution 37 Gezondheid 36 Quality Control 36 Water 36 Water Microbiology 36 Water Pollution 36 Water Supply 36 Water quality 36 Water quality management 36 Knowledge 34 Kathmandu 23 Children 21 Depression 14 Prevalence 14 methods 11 Anxiety 10 Nutrition 9 Prevention 9 Hypertension 8 Mothers 8 Public health 8 Quality of life 8 Women 8